Since many large petrochemical companies supply the FR clothing and steel toed boots for free, why not wear it everyday?
Personally, I wear a coverall (rarely out in the field), and with the list price of a pair of FR Wranglers up to $50 or so, why bother spending money on clothes? The only difference between standard issue and FR is a small “FR” tag.

Diggsc

It was admittedly a long time ago (early 80’s), but when I was on rig near Big Piney, WY, we bought boots by the pallet load. The leather simply dissolved after a week or so standing in the drill mud. Good to see the manufacturers are getting input from the actual people using their products.